PDF malware analysis — malicious · ca3a466ebbd9fb48

MALICIOUS

PDF

43.5 KB Created: 2020-08-09 03:24:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: ad5e5cdac43cd74646122ec47ee98f05 SHA-1: bcd3934aeddd776b1cf923118fa33a0ad3c8ea18 SHA-256: ca3a466ebbd9fb4803558717fcd32cfb636e5a762328a742952197e704706892

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF file was flagged as malicious by a machine learning classifier and contains a large number of embedded links, many of which are part of a link farm. One of these links, https://ttraff.cc/pify?keyword=aarti+mata+ki+pdf, points to known malicious redirector infrastructure. The document body contains garbled text and what appears to be metadata from the wkhtmltopdf tool, suggesting it was programmatically generated rather than containing user-readable content. No scripts were extracted from this sample.

Machine Learning

Nyx PDF Classifier malicious score 0.9953

Heuristics 3

PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL https://ttraff.cc/pify?keyword=aarti+mata+ki+pdf
- http://zoger.abishealthbeauty.com/uploads/1/3/2/3/132303382/jajupevitewil-tazofad-pugofavuka.pdf
- http://files.torontobelts.com/uploads/1/3/2/6/132696171/furedasoxiferaj_xuwoli_pelapog.pdf
- http://files.climatizetennessee.com/uploads/1/3/1/0/131069789/4887c823cc366.pdf
- http://files.goevangelismos.com/uploads/1/3/1/4/131408103/ludebewita.pdf
- https://cdn.shopify.com/s/files/1/0434/6943/9141/files/tratamento_da_anemia.pdf
- https://cdn.shopify.com/s/files/1/0427/4143/2487/files/pamakodugonor.pdf
- https://cdn.shopify.com/s/files/1/0433/5645/5067/files/5963177812.pdf
- https://cdn.shopify.com/s/files/1/0431/2439/2093/files/diwenogolixekuz.pdf
- https://cdn.shopify.com/s/files/1/0427/4018/7303/files/pitirobalovijunululugez.pdf
- https://cdn.shopify.com/s/files/1/0432/2295/8248/files/vimazovutalezabanedut.pdf
- https://cdn.shopify.com/s/files/1/0448/4068/1633/files/binary_search_tree_c_code.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fiwowosilikaragufes.pdf
- https://cdn.shopify.com/s/files/1/0430/3932/6365/files/sitativogogazuwusofinu.pdf
- https://cdn.shopify.com/s/files/1/0430/9411/4453/files/xurebajipiremojepexizegiz.pdf
- https://cdn.shopify.com/s/files/1/0432/7433/8472/files/batubosedopobo.pdf
- https://cdn.shopify.com/s/files/1/0428/8774/1607/files/13347150650.pdf

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00005f98.bin` `422f49280af61b9222011c413e71aaa20215f49f3f556bd0d8f346701aa3fd6c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5F98	5028 bytes
`font_01_sfnt_off000070a3.bin` `ddc521e0e9b841ef98f57d4445bec79f45c2f843240b710926e22788303abb13`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x70A3	13548 bytes
`font_02_sfnt_off00009bd4.bin` `8b5d51327905dac5b755c8de855f35b2b6cf71bb2f073ce976c220a247b1c4e1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9BD4	3688 bytes

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